Injector



Patented Aug. I6, I898.

W. R. PARK &. B. T. WILLISTON.

INJECTOR.

(Application filed J une 11, 1898.)

7 sheetsshaet I.

(Model) T: NORRIS PETERS cc. Pnoro-umo. wnsmumo No. 609,I63; Patented Aug. 16, I898. W. R. PARK & B. T. WILLISTON.

I N J E C T 0 R.

(Application filed June 11, 1898.)

7 Sheets--Sheet 2.

(ModeL) I JEN-rm as: k M I WITH E55 E5. MM 5; 92%,

Patented Aug. 16, I898.

w. n. PARK & B. T. WILLISTON.

INJECTOR.

(Application filed June 11, 1698.) (Model) 7 Sheets-Sheet 3;

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Patented Aug. l6, I898. W. B. PARK & B. T. .WILLISTON.

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(Model) Wp-FIJEEEEEI No. 60.9,l63. Patented Aug. I6, I898. W. B. PARK & B. T. WILLISTON.

I N J E C T 0 R.

(Application filed June 11, 1898.)

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(Model.)

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@WO OWMJ/ N0. 609,l63. Patented Aug. "5, I898. W. R. PARK &. B. T. WILLISTDN.

INJECTOR.

(Application filed June 11, 1898.) (Model.) 7 Sheets$heet 6.

NVEN TEIRS 2/15 1447 it? p q L 5 A 3 III V Patented Aug. I6, 1893. w. n. PARK & B. T. WILLISTON.

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Nita TATES ATENT FFICE.

WILLIAM R. PARK, OF TAUNTONQAND BELVIN T. VVILLISTON, OFSOMER- VILLE, MASSACHUSETTS, ASSIGNORS TO THE HANCOCK INSPIRATOR COMPANY, OF BOSTON, MASSACHUSETTS.

INJECTOR.

SPECIFICATION forming part of Letters was No. 609,163, dated August 16, 1898.

Application'filed June 11, 1898. Serial No. 683,180. (ModeL) tery of injectors supplied each with an exter-' nal handle or lever is incorporated in a single 15 structure having a single enveloping casing in such manner that the composite injector possesses an eflicient rangefrom the lowest delivery of one of the assembled injectors to the highest delivery of both or all of the in- 2 o j ectors collectively. The injectors of the pair or battery may be of the same size; but we prefer to assemble injectors of varying sizes, because thereby a smaller minimum delivery consistent with a given maximum delivery 25 is made possible than if the injectors are all of the same size. For the purposes of the specification it will be sufficient to show a composite injector containing a pair of cooperating injector elements, since it is obvious that more than two may be incorporated in 00111- bination in a structure having for its obj eat to secure a still greater range of delivery and increased maximum capacity. r

A composite injector constructed in accord 3 5 ance with this invention is capable of exhibiting great range of delivery capacity and may also be used simultaneously as a feed water heater and injector.

In the drawings, wherein like letters are elevation along the line 1 2, Figs. 2 and 3,

viewed from the left-hand side of the instrument as seen in'Fig. 2. 1 Fig.5 is alongitudinal sectional elevation of the injector at the Fig. 2 is an external end ele .tions H" H 11 line 3 4, Figs. 2 and 3, viewed from the righthand side of the injector as seen in Fig. 2. Fig. 6 shows a detail taken in transverse cross-section at the line 9 10 of Fig. 1. Fig. ;7 is a longitudinal section at the line 13 14, Fig. 2, showing the disposition of the suctionpassages. Fig. 8 is a cross-section at line 15 16, Fig. 7, looking from the handle end of the inspirator. Fig. 9 is a cross-section on the broken line 17 18 19 20 of Fig. 7 looking from the boiler end of the inspirator. Fig. 10 is a cross-section of the inspirator-casing at line 5 6 7 8 of Fig. 3 looking from the handle end of the inspirator, and Fig. ll is a cross-section at the line 11 12 of Fig. 3 looking from the handle end of the inspirator.

For the individual injectors which operate conjointly in the composite injector we select the form of double-tube inspirator shown in our Patent No. 492,944, dated March 7, 1893, because we believe this to be an exceptionally efficient injector, especially for locomotivework, for which the composite injector is also peculiarly well adapted. To the said patent, therefore, we refer for a closely-detailed description, specifying herein the cooperative parts of each injector element only so far as is convenient for a general understanding. For convenience also we use capital letters of reference in the description of the injector of Fig. 4 (the larger one of the pair combined in the composite injector) and the same letters in lower case to indicate the corresponding parts of the smaller injector, (shown in Fig. 5,)

so that a description of the larger injector will suffice for both.

Referring to Fig. 4, the valve-stem V operates the lifter steam-valve V and forcer steam-Valve V successively by a single out ward movement of the handle H, which is pivoted on the main casin g A by link connec- The initial movement of the handleI-I admits steam to the passage V at V, and thence to the lifter steam-tube C,

whose entrance-aperture is controlled and ad- 'j iisted by a reducing-valve R, operated by an external hand-wheel R: Water is entrained into the lifter combining-ti1be C' from the suction-pipe W and is delivered to the lifter delivery-chamber through the lifter delivery-tube C The lifted water rises to the forcer-tubes F F and flows to the final overflow O partly through the forcer-tube, but for the most part through an intermediateoverflow port I, which is controlled by an automatic puppet-valve I. As the handle II completes its outward movement the forcer steam-valve V is gradually opened and the final overflow O is gradually closed. The movement of the final-overflow valve 0 is actuated from the handle II through link L, bell-crank lever I. L L which is pivoted to the link L at L and to the standard L at L connecting-rod L and valve-stem 0 which slides in the stuffing-box bonnet The gradual closure of the final-overflow valve 0, together with the gradual opening of steamvalve V which delivers steam through the passage V to the torcer steam-tube F, produces a change in the balance of pressure which forces the puppet-valve I to its seat. At about the same time the passage of steam through the forcer steam-tube F forms a jet in the forcer combining and delivery tubes F and F raising the pressure in the forcer delivery-chamber F to a point where the valve B which controls the port 13 opens the passage communicating to the boiler.

The substitution of the lower-case in distinction from the capital letters supplies the description of the smaller of the two injectors. (Shown in Fig. 5.) Each of these two injector elements has a separate suction-pipe and chamber, so that any interruption in the operation of one cannot affect the operation of the other. If it is desired to heat the feedwater, but at the same time to continue the I 'feed to the boiler uninterrupted, one of the injectors, say the smaller one, can be made to blow back by an abrupt full movement of its handle h, Fig. 5, the suddenness of this movement closing the final-overflow valve before a jet can be established, sending the full blast of steam to the tank while the larger injector is feeding it to the boiler. Obviously if a common suction-pipe were provided for the two injector elements such manipulation would be impossible and any break in the operation of one injector would immediately throw the other out of action. The steam is taken from a common steam-pipe S, which admits steam to a dome S, from which branches S 8 lead to the larger and smaller injectors, respectively. From this point the injector-casing A is divided by a longitudinal partition X, which isolates from each other the series of chambers which occupy the divisions of the casing and in which the injectors are respectively located. The two steam and water passages blend again with each other in the boiler valve-chamber B in which the boiler check-valves B b are mounted in caps Bb. Out of this common valve-chamber the boiler-pipe B emerges, leading to the boiler. This entire structure is comprised within a single compact casin g A, from which the only lateral projections of any consequence are the compartments A a, which contain the overflow-valves O 0, respectively.

The internal construction'of the injectorcasing is shown by detail drawings of Figs. 6 to 11, inclusive, which supplement the longitudinal sectional drawings of Figs. 4 and 5.

Fig. 6 is a transverse section of a portion of the inspirator-casin g, taken at the line 9 10 in Fig. 3, looking from the handle end of the inspirator. The steamentrance S admits steam to a steam-dome S. S s are respectively the seats forthe valves V c.

Fig. 7 is a longitudinal section of the injector-casing'at the portion where the suction-pipes WV 10 enter the injector and is taken at the line 13 1 1- of Fig. 2.

Figs. 8 and 9 serve further to explain Fig. 7. Fig. 8, which is a cross-section of Fig. 7 at line 15 16 looking from the handleend of the injector, shows the water-entrance \V and the aperture 0 into which is inserted the lifter combining and delivery tube 0 0 Fig. 9 is a cross-section of Fig. 7 at line 17 18 19 20 viewed from the boiler end of the injector, showing the passage for the water-inlet 'w and the aperture 0 in which is inserted the lifter combining and delivery tnbesc 0 The aperture C is also shown in this figure in its compartment, which is separated from the suction-compartment of the smaller of the two injectors by the longitudinal partition X.

Fig. 10 is a section on line 5 6 7 8 of Fig. 3 looking from the handle end of the injector and shows the forcer delivery-chambers F f 3 of the larger and smaller injectors, respectively. The seats 0 o for the final-overflow-valve-stem bonnets O 0 the final-overflow outlets O 0, situated in the compartments A a of the main casing, and a portion of the lifter delivery-chamber c in the smaller injector also appear in this section. The two overflow-outlets O o deliver to a common chamber T, from which the final outlet is at T. The boiler delivery-dome A with the valve-plugs B 1), appears in elevation in this figure.

A section of the main casing at line 11 12 of Fig. 3 is shown in Fig. 11. Integral with the casing A is the boiler delivery-dome A which communicates with the forcer deliverychambers F through ports B b and with the boiler through the pipe B.

In sectional Figs. 6, 8, 9, 10, and 11 the 1011 gitudinal web X is shown in various portions of the composite injector.

What we claim, and desire to secure by Letters Patent, is

1. In a composite injector, a main casing comprising isolated chambered divisions, a complete assemblage of injector-tubes in each division,a common steam-chamber communicating with the steam-tubes of the several injectors, suction-pipes, isolated from each other, a suction-pipe for each injector, overflow-outlets from each isolated injectorchamber common to the several injectors,

boiler check-valves in the said boiler deliverychamber controlling the boiler delivery-ports of the several injectors, respectively, and external devices whereby the said several injectors are respectively operated, substantially as described.

Signed by us at Boston this 28th day of May, 1898.

WILLIAM R. PARK. BELVIN T. WILLISTON.

Witnesses:

E. F. GROLL, EDWARD POWERS. 

